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Published on: September 14, 2010
Pathogenesis of AIDS lymphoma: role of oncogenic viruses and B cell activation-associated molecular lesions
Marta Epeldegui1, Daniel P Widney, Otoniel Martínez-Maza
1Department of Microbiology, David Geffen School of Medicine at UCLA, Los Angeles, California 90095-1740, USA.
Purpose Of Review:
We discuss recently published studies that elucidate the pathogenesis of AIDS-associated lymphoma.
Recent Findings:
Several recent reports have provided valuable new information on the role of gamma-herpesviruses in the pathogenesis of AIDS-associated lymphoma. In addition to this, significant new information has become available on how B cell activation-associated DNA-modifying events, involving activation-induced cytidine deaminase and DNA polymerase-eta, contribute to the molecular lesions that result in AIDS-associated lymphoma. In particular, new evidence that oncogenic viruses can directly induce activation-induced cytidine deaminase expression and oncogene mutation in human B cells is of central relevance to better understanding the pathogenesis of AIDS-associated lymphoma.
Summary:
New information provides insights into the contributions of immune dysfunction and oncogenic virus infection to pathogenesis of AIDS-associated lymphoma, and may lead to new potential targets for therapeutic intervention in these cancers.
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